Materials Research Letters (Jun 2020)

Water-responsive artificial muscles from commercial viscose fibers without chemical treatment

  • Ya Li,
  • Menghe Miao

DOI
https://doi.org/10.1080/21663831.2020.1743787
Journal volume & issue
Vol. 8, no. 6
pp. 232 – 238

Abstract

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Moisture change in the clothing system caused by perspiration may be used as a stimulus for smart textiles in a variety of applications. Here we report a water-responsive coil-shaped artificial muscle produced from time-proven, low-cost viscose fibers without chemical modification. Crystallinity of the viscose fiber is a key factor to the actuation performance of the final artificial muscle. The viscose fiber artificial muscle can generate a 35% contraction and a force many times greater than animal skeletal muscles of the same weight. The structural parameters and fabrication conditions were optimized to improve the performance of the coil-shaped artificial muscle.

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